Hi Jens, Not yet got your mail, but per https://lkml.org/lkml/2021/2/2/1901, this patch is the incremental. Codes based on: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/patch/?id=8a483b42b1b3cef7e72564cdcdde62a373bd2f01 Notes: After checking previous hand-applied patch in block-5.11 broken 2 lines in original patch, the incremental covers all. Thanks. Signed-off-by: Lin Feng <linf@xxxxxxxxxx> --- block/bfq-iosched.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 959e25c..9e81d10 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -6332,13 +6332,13 @@ static unsigned int bfq_update_depths(struct bfq_data *bfqd, * limit 'something'. */ /* no more than 50% of tags for async I/O */ - bfqd->word_depths[0][1] = max(((1U << bt->sb.shift) * 3) >> 2, 1U); + bfqd->word_depths[0][0] = max((1U << bt->sb.shift) >> 1, 1U); /* * no more than 75% of tags for sync writes (25% extra tags * w.r.t. async I/O, to prevent async I/O from starving sync * writes) */ - bfqd->word_depths[0][1] = max((bt->sb.depth * 3) >> 2, 1U); + bfqd->word_depths[0][1] = max(((1U << bt->sb.shift) * 3) >> 2, 1U); /* * In-word depths in case some bfq_queue is being weight- -- 2.25.4
